diff options
Diffstat (limited to 'target/linux/rb532/files/drivers/net/rc32434_eth.h')
| -rw-r--r-- | target/linux/rb532/files/drivers/net/rc32434_eth.h | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/target/linux/rb532/files/drivers/net/rc32434_eth.h b/target/linux/rb532/files/drivers/net/rc32434_eth.h new file mode 100644 index 000000000..eaa0bfe51 --- /dev/null +++ b/target/linux/rb532/files/drivers/net/rc32434_eth.h @@ -0,0 +1,178 @@ +/************************************************************************** + * + * BRIEF MODULE DESCRIPTION + * Definitions for IDT RC32434 on-chip ethernet controller. + * + * Copyright 2004 IDT Inc. (rischelp@idt.com) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + ************************************************************************** + * May 2004 rkt, neb + * + * Initial Release + * + * Aug 2004 + * + * Added NAPI + * + ************************************************************************** + */ + + +#include <asm/rc32434/rc32434.h> +#include <asm/rc32434/dma_v.h> +#include <asm/rc32434/eth_v.h> + +#define CONFIG_IDT_USE_NAPI 1 +#define RC32434_DEBUG 2 +//#define RC32434_PROC_DEBUG +#undef RC32434_DEBUG + +#ifdef RC32434_DEBUG + +/* use 0 for production, 1 for verification, >2 for debug */ +static int rc32434_debug = RC32434_DEBUG; +#define ASSERT(expr) \ + if(!(expr)) { \ + printk( "Assertion failed! %s,%s,%s,line=%d\n", \ + #expr,__FILE__,__FUNCTION__,__LINE__); } +#define DBG(lvl, format, arg...) if (rc32434_debug > lvl) printk(KERN_INFO "%s: " format, dev->name , ## arg) +#else +#define ASSERT(expr) do {} while (0) +#define DBG(lvl, format, arg...) do {} while (0) +#endif + +#define INFO(format, arg...) printk(KERN_INFO "%s: " format, dev->name , ## arg) +#define ERR(format, arg...) printk(KERN_ERR "%s: " format, dev->name , ## arg) +#define WARN(format, arg...) printk(KERN_WARNING "%s: " format, dev->name , ## arg) + +/* the following must be powers of two */ +#ifdef CONFIG_IDT_USE_NAPI +#define RC32434_NUM_RDS 64 /* number of receive descriptors */ +#define RC32434_NUM_TDS 64 /* number of transmit descriptors */ +#else +#define RC32434_NUM_RDS 128 /* number of receive descriptors */ +#define RC32434_NUM_TDS 128 /* number of transmit descriptors */ +#endif + +#define RC32434_RBSIZE 1536 /* size of one resource buffer = Ether MTU */ +#define RC32434_RDS_MASK (RC32434_NUM_RDS-1) +#define RC32434_TDS_MASK (RC32434_NUM_TDS-1) +#define RD_RING_SIZE (RC32434_NUM_RDS * sizeof(struct DMAD_s)) +#define TD_RING_SIZE (RC32434_NUM_TDS * sizeof(struct DMAD_s)) + +#define RC32434_TX_TIMEOUT HZ * 100 + +#define rc32434_eth0_regs ((ETH_t)(ETH0_VirtualAddress)) +#define rc32434_eth1_regs ((ETH_t)(ETH1_VirtualAddress)) + +enum status { filled, empty}; +#define IS_DMA_FINISHED(X) (((X) & (DMAD_f_m)) != 0) +#define IS_DMA_DONE(X) (((X) & (DMAD_d_m)) != 0) + + +/* Information that need to be kept for each board. */ +struct rc32434_local { + ETH_t eth_regs; + DMA_Chan_t rx_dma_regs; + DMA_Chan_t tx_dma_regs; + volatile DMAD_t td_ring; /* transmit descriptor ring */ + volatile DMAD_t rd_ring; /* receive descriptor ring */ + + struct sk_buff* tx_skb[RC32434_NUM_TDS]; /* skbuffs for pkt to trans */ + struct sk_buff* rx_skb[RC32434_NUM_RDS]; /* skbuffs for pkt to trans */ + +#ifndef CONFIG_IDT_USE_NAPI + struct tasklet_struct * rx_tasklet; +#endif + struct tasklet_struct * tx_tasklet; + + int rx_next_done; + int rx_chain_head; + int rx_chain_tail; + enum status rx_chain_status; + + int tx_next_done; + int tx_chain_head; + int tx_chain_tail; + enum status tx_chain_status; + int tx_count; + int tx_full; + + struct timer_list mii_phy_timer; + unsigned long duplex_mode; + + int rx_irq; + int tx_irq; + int ovr_irq; + int und_irq; + + struct net_device_stats stats; + spinlock_t lock; + + /* debug /proc entry */ + struct proc_dir_entry *ps; + int dma_halt_cnt; int dma_run_cnt; +}; + +extern unsigned int idt_cpu_freq; + +/* Index to functions, as function prototypes. */ +static int rc32434_open(struct net_device *dev); +static int rc32434_send_packet(struct sk_buff *skb, struct net_device *dev); +static void rc32434_mii_handler(unsigned long data); +static irqreturn_t rc32434_und_interrupt(int irq, void *dev_id); +static irqreturn_t rc32434_rx_dma_interrupt(int irq, void *dev_id); +static irqreturn_t rc32434_tx_dma_interrupt(int irq, void *dev_id); +#ifdef RC32434_REVISION +static irqreturn_t rc32434_ovr_interrupt(int irq, void *dev_id); +#endif +static int rc32434_close(struct net_device *dev); +static struct net_device_stats *rc32434_get_stats(struct net_device *dev); +static void rc32434_multicast_list(struct net_device *dev); +static int rc32434_init(struct net_device *dev); +static void rc32434_tx_timeout(struct net_device *dev); + +static void rc32434_tx_tasklet(unsigned long tx_data_dev); +#ifdef CONFIG_IDT_USE_NAPI +static int rc32434_poll(struct net_device *rx_data_dev, int *budget); +#else +static void rc32434_rx_tasklet(unsigned long rx_data_dev); +#endif +static void rc32434_cleanup_module(void); + + +static inline void rc32434_abort_dma(struct net_device *dev, DMA_Chan_t ch) +{ + if (__raw_readl(&ch->dmac) & DMAC_run_m) { + __raw_writel(0x10, &ch->dmac); + + while (!(__raw_readl(&ch->dmas) & DMAS_h_m)) + dev->trans_start = jiffies; + + __raw_writel(0, &ch->dmas); + } + + __raw_writel(0, &ch->dmadptr); + __raw_writel(0, &ch->dmandptr); +} |